DE3736066C1 - Retractor - Google Patents

Retractor

Info

Publication number
DE3736066C1
DE3736066C1 DE19873736066 DE3736066A DE3736066C1 DE 3736066 C1 DE3736066 C1 DE 3736066C1 DE 19873736066 DE19873736066 DE 19873736066 DE 3736066 A DE3736066 A DE 3736066A DE 3736066 C1 DE3736066 C1 DE 3736066C1
Authority
DE
Germany
Prior art keywords
jacket
retractor
characterized
handle
retractor blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE19873736066
Other languages
German (de)
Inventor
Theodor Lutze
Dieter Dipl-Ing Weisshaupt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aesculap AG
Original Assignee
Aesculap Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aesculap Werke AG filed Critical Aesculap Werke AG
Priority to DE19873736066 priority Critical patent/DE3736066C1/en
Application granted granted Critical
Publication of DE3736066C1 publication Critical patent/DE3736066C1/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors

Description

The invention relates to a retractor with a retractor sheet, a handle, a light guide to illuminate the Point of engagement of the retractor and with a coupling to the Connecting a light guide cable to the light guide, whereby the light guide around a bent, tubular jacket which grips through the handle and along a part of the wound hook blade and in which a glass fiber bundle runs is embedded.

Wound hooks are known in which a plastic wound hook is used sheet is directly connected to a light guide, so that light through the plastic sheet to the Front edge is directed at which it emerges (EP 1 01 781 B1). Such an instrument is commonly called a non-resilient plastic disposable product used. With others Known instruments of this type can be used again are used, however, the plastic sheets are considered Disposable parts designed (DE 33 01 890 A1).

In other known retractors there is a retractor on the retractor Handle molded on immediately by a bundle of fibers  receiving tube is penetrated. This pipe is on that metallic wound hooks soldered or welded (companies Prospectus "Fiberoptics for Surgery" Applied Fiberoptics, Inc., 0219/81, pages 5 ff). The pipe placed on the sheet can cause a view restriction, also arise through the soldered joints corners and edges, which is a hygienic impede proper cleaning.

It is an object of the invention to provide a retractor at the beginning to improve the type described so that all parts of the Instruments are designed to be sterilizable and that for For the purposes of sterilization, a simple disassembly of the instru mentes into its individual parts.

This task is described in the case of a wound hook at the beginning benen type solved according to the invention in that the coat Fastening elements for detachable retention of the wound hook leaf on the coat and that the handle on the the rear end of the jacket loosely attached and in this Position is determined by a releasable holding member. The sheath that receives the optical fiber bundles thus forms a scaffold for the retractor, on the one hand detachable the retractor blade is attached, on the other hand by a simply attach a handle part, which on the coat is releasably fixable. The parts can be in simpler Way to be taken apart, and then clean and resterilize all individual parts in a simple manner, where there are no recesses and edges that Pose cleaning and sterilization problems.  

A particularly safe positioning of the retractor blade arises when the jacket has a flat contact surface for has the retractor blade.

Preferably, the jacket is at least in the part in which the retractor blade rests against it, rectangular in cross-section. It is advantageous if the glass fibers at least on the two The ends of the jacket are glued to each other and to the jacket. This results in a completely dense formation of the Jacket so that the jacket component is sterilized as often as required can be without damaging the sensitive glass fibers are to be feared.

In the preferred embodiment it is provided that the Coat a notch running across its length or groove for receiving the handle-side end of the retractor leaf and that at the front end of the jacket Locking element is arranged, which with a complementary Locking element on the retractor blade a releasable locking connection forms. It is therefore possible in the simplest possible way To attach wound hook blade to the coat and from it to take it off again, while still pressing it is firmly held on the coat so that with the instrument overall, large forces can also be transmitted. This makes it possible to use the retractor blade if necessary replace quickly, so that the same retractor other with retractor blades of the desired dimensions can be used.

It when the locking member on the jacket is particularly advantageous is a wedge-shaped projection that is on its top one running across the plane of the retractor blade  Has support surface, and if as a complementary locking member a recess is arranged in the retractor blade. It can preferably be provided that in the retractor blade on the the side facing the jacket to the upper edge of the recess a tapered recess connects. As a result, the Insert the retractor blade an elastic snap allows, the wound hook blade overall in ge ring dimension elastically deformed. After snapping it sits the retractor blade is positively and non-positively on the coat; the free end of the retractor blade must be removed to be bent towards the handle To release the snap connection again.

The groove or notch for receiving the handle end The wound hook blade can thicken the coat be arranged, preferably a front at the same time Stop for the handle forms.

Furthermore, it can be provided that the retractor blade on has its handle-side end guide surfaces which at inserted wound hook blade on both sides of the coat issue. On the one hand, this causes the onset of the wound hook leaf relieved, on the other hand fix this lateral guide surfaces the retractor blade on the coat against a lateral shift.

In the further preferred embodiment is before seen that with the handle attached to this protruding end of the jacket for coupling with the light  guide cable can be screwed on a collar. It deals is therefore a quick release between the light guide cable and the jacket receiving the optical fibers.

It is particularly advantageous if the screwed on Throw ring on the handle and this against one presses the front stop. The quick release from then forming union ring serves at the same time for the axial Fixing the handle on the coat so that vice versa after loosening the clutch, the handle easily can be exchanged.

It when the retractor blade in the Contact area on the jacket in the form of a band or strip forms is. It then creates the entire length the coat and thereby experiences an extraordinary effective stabilization. On the other hand, through this Training of elastic bending to a small extent possible so that the insertion and removal of the retractor leaf is made possible.

The following description of preferred embodiment forms of the invention is used in connection with the Drawing of the detailed explanation. It shows

Figure 1 is a perspective view of a retractor with inserted retractor blade (solid lines) and with removed retractor blade (dash-dotted lines).

Fig. 2 is a sectional view taken along line 2-2 in Fig. 1;

Fig. 3 is a sectional view taken along line 3-3 in Fig. 1 and

Fig. 4 is a plan view of the recess in the retractor blade seen from the jacket side.

The wound hook shown in Fig. 1 comprises essentially three parts, namely a tubular, metallic housing with a rectangular cross-section, which is bent at a right angle at one end and which is referred to below as the jacket 1 , further a detachably connected to the jacket 1 in essential L-shaped wound hook blade 2 consisting of band-shaped or strip-shaped metal and a hollow handle 3 which can be plugged onto the jacket 1 .

The jacket itself is composed in the illustrated embodiment, for example, from three sections, namely a front section 4 on the wound hook side, a central section 5 and a handle section 6 which is normally arranged in the interior of the handle 3 . The three sections of the jacket have a cross-sectionally rectangular, flush through channel 7 , which can taper in cross-section at its end facing the wound hook blade ( FIG. 3). Inside this channel - are not shown in the drawing - a variety of glass fibers embedded, which are compactly glued to one another at least at the two ends of the jacket 1 and to the inner wall of the jacket 1 , so that the channel 7 is completely sealed off from the outside and the fibers are fixed in the jacket and secured against any damage.

The middle section 5 has at its lower end a holding projection 8 which forms a notch or groove 9 which runs transversely to the longitudinal direction of the casing 1 and which adjoins the flat underside of the casing 1 and is open towards the front end of the wound hook. In the vicinity of the front end on the handle 3 facing side of the jacket 1 a wedge-shaped Rastvor jump 10 is arranged, which ends at its top in a perpendicular to the jacket surface 11 supporting surface 12 .

The wound hook blades 2 can be inserted with their handle-side end 13 into the groove 9 , the wound hook blades 2 being at a distance from the underside 14 of the jacket 1 and from the jacket surface 11 . By pressing on the free end 15 of the retractor blade 2 bent in the direction of the handle, the latter can be pivoted in the direction of the underside 14 and the lateral surface 11 , the groove 9 defining the axis of rotation. The one leg of the retractor blade 2 slides along the wedge-shaped locking projection 10 and is elastically bent away from the lateral surface 11 until the locking projection 10 snaps into a rectangular locking recess 16 in the retractor blade 2 . The locking recess 15 is arranged so that the upper edge 17 of the locking recess 16 rests on the support surface 12 and thereby the wound hook sheet 2 flat against both the underside 14 and the outer surface 11 of the jacket 11 . In this position, which is shown in solid lines in FIG. 1, the retractor blade 2 is fixed on the jacket 1 , so that forces can be transferred from the jacket 1 to the retractor blade 2 . This definition is increased by lateral tabs or guide surfaces 18 , which are located on the handle-side end of the wound hook blade 12 and bear against the side surfaces of the jacket 1 .

The snap-in of the wound hook blade 2 is facilitated by the fact that a chamfered recess 19 connects to the upper edge 17 of the locking recess 16 on the side facing the jacket 1 ( FIG. 3), so that the material thickness of the wound hook blade 2 in the area of the upper Edge 17 is less than in other places. As a result, the wound hook blade 2 can slide more easily along the latching projection 10 when it is put on.

Although the retractor blade 2 is fixed on the jacket 1 in such a way that considerable forces can also be transmitted, it can be detached from the jacket 1 in a simple manner by bending the retractor blade 2 at the free end 15 in the direction of the handle 3 . This makes it possible to pivot the retractor blade 2 about the axis of rotation formed by the groove 9 counterclockwise ( Fig. 1) past the locking projection 10 , so that the retractor blade 2 can be pulled out of the groove 9 at closing. In this way, changing the retractor blade 2 is possible at any time.

The holding projection 8 and a thickening 20 on the top of the middle section 5 together form an axial stop surface 21 for the handle 3 pushed onto the jacket 1 from the rear. This handle 3 itself has an essentially tubular housing 22 , on the underside of which an anatomically shaped hook 23 is molded. The handle 3 is somewhat shorter overall than the handle section 6 of the jacket 1 , so that the jacket 1 protrudes from the handle 3 on the back. In this area, the jacket 1 carries an external thread 24 , on which a union nut 25 of an optical cable 26 can be applied so that the end faces of the optical cable 26 and the jacket 1 are close to each other linearly ( Fig. 2). In addition, the union nut 25 lies against the handle 3 and presses it in the axial direction against the stop surface 21 , so that the handle 3 is fixed on the jacket 1 in the axial direction by the union nut 25 . The handle 3 is secured against rotation due to the rectangular cross section of the casing 1 .

The jacket 1 receiving the glass fibers thus forms the main part of the entire instrument on which the retractor blade, handle and light guide cable can be detachably attached. These parts can be easily removed and replaced, in particular for sterilization, but also during operation to replace the retractor blade. The light exit end of the jacket 1 is located in the embodiment shown in the drawing in the upper third of the vertically bent leg of the retractor blade 2 . In principle, this end could also assume a different position along this leg.

Claims (13)

1. retractor with a retractor blade, a handle, a light guide for illuminating the point of engagement of the retractor and with a coupling for connecting a light guide cable to the light guide, the light guide comprising a bent, tubular jacket which extends through the handle and along a part of the retractor blade and in which a glass fiber bundle is embedded, characterized in that the jacket ( 1 ) has fastening elements ( 9, 10 ) for releasably holding the retractor blade ( 2 ) on the jacket ( 1 ) and that the handle ( 3 ) on the rear End ( 6 ) of the jacket ( 2 ) is loosely attached and fixed in this position by a releasable holding member ( 25 ).
2. retractor according to claim 1, characterized in that the jacket ( 2 ) has a flat contact surface ( 11, 14 ) for the retractor blade ( 2 ).
3. Retractor according to claim 1 or 2, characterized in that the jacket ( 1 ) is at least in the part ( 4 ) on which the retractor blade ( 2 ) rests, is quite angular in cross section.
4. Retractor according to one of the preceding claims, characterized in that the glass fibers are bonded at least at the two ends of the jacket (1) with each other and with the jacket (1).
5. Retractor according to one of the preceding claims, characterized in that the jacket ( 1 ) has a notch or groove ( 9 ) extending transversely to its longitudinal direction for receiving the handle-side end ( 13 ) of the retractor blade ( 2 ) and that at the front end of the Sheath ( 1 ) is arranged a locking element ( 10 ) which forms a releasable locking connection with a complementary locking element ( 16 ) on the retractor blade ( 2 ).
6. Retractor according to claim 5, characterized in that the latching member ( 10 ) on the jacket ( 1 ) is a wedge-shaped projection which has a support surface ( 12 ) extending transversely to the plane of the retractor blade ( 2 ) on its upper side, and that as a complementary one Locking member ( 16 ) has a recess in the retractor blade ( 2 ).
7. Retractor according to claim 6, characterized in that in the retractor blade ( 2 ) on the side facing the jacket ( 1 ) to the upper edge ( 17 ) of the recess ( 16 ) adjoins a chamfered depression ( 19 ).
8. wound hook according to one of claims 5 to 7, characterized in that the groove or notch ( 9 ) is arranged in a thickening ( 5 ) of the jacket ( 1 ).
9. wound hook according to claim 8, characterized in that the thickening ( 5 ) forms a front stop ( 21 ) for the handle ( 3 ).
10. Retractor according to one of the preceding claims, characterized in that the retractor blade ( 2 ) on its handle-side end ( 13 ) has guide surfaces ( 18 ) which rest on both sides of the jacket ( 1 ) when the retractor blade ( 2 ) is inserted.
11. Retractor according to one of the preceding claims, characterized in that a coupling ring (25) is screwed onto the at plugged handle (3) from this protruding end of the shell (1) for coupling to the fiber optic cable (26).
12. A wound hook according to claim 11, characterized in that the screw-on collar ring ( 25 ) abuts the handle ( 3 ) and presses it against a front stop ( 21 ).
13. Retractor according to one of the preceding claims, characterized in that the retractor blade ( 2 ) in the contact area on the jacket ( 1 ) is band-shaped or strip-shaped.
DE19873736066 1987-10-24 1987-10-24 Retractor Expired DE3736066C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873736066 DE3736066C1 (en) 1987-10-24 1987-10-24 Retractor

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19873736066 DE3736066C1 (en) 1987-10-24 1987-10-24 Retractor
US07/469,577 US5035232A (en) 1987-10-24 1988-10-21 Retractor
EP19880909310 EP0389504B1 (en) 1987-10-24 1988-10-21 Retractor
PCT/EP1988/000945 WO1989003660A1 (en) 1987-10-24 1988-10-21 Retractor
JP63508606A JPH059099B2 (en) 1987-10-24 1988-10-21

Publications (1)

Publication Number Publication Date
DE3736066C1 true DE3736066C1 (en) 1988-11-10

Family

ID=6339017

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873736066 Expired DE3736066C1 (en) 1987-10-24 1987-10-24 Retractor

Country Status (5)

Country Link
US (1) US5035232A (en)
EP (1) EP0389504B1 (en)
JP (1) JPH059099B2 (en)
DE (1) DE3736066C1 (en)
WO (1) WO1989003660A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3907072C1 (en) * 1989-03-04 1990-03-15 Aesculap Ag, 7200 Tuttlingen, De Surgical instrument
EP2757934A4 (en) * 2011-09-23 2016-03-09 Invuity Inc Illuminated and modular soft tissue retractor

Also Published As

Publication number Publication date
EP0389504B1 (en) 1993-08-11
JPH059099B2 (en) 1993-02-04
US5035232A (en) 1991-07-30
WO1989003660A1 (en) 1989-05-05
EP0389504A1 (en) 1990-10-03
JPH02502071A (en) 1990-07-12

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Owner name: AESCULAP AG, 7200 TUTTLINGEN, DE

8363 Opposition against the patent
8365 Fully valid after opposition proceedings
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Owner name: AESCULAP AG & CO. KG, 78532 TUTTLINGEN, DE

8339 Ceased/non-payment of the annual fee